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#include "GY_PortItem.h"

#include <QApplication>
#include <QBitmap>
#include <QCursor>
#include <QDrag>
#include <QGraphicsSceneMouseEvent>
#include <QMimeData>
#include <QPainter>
#include <QRandomGenerator>
#include <QWidget>
#include "GY_DiagramScene.h"
#include "GY_Arrow.h"
#include "GY_DiagramItem.h"

GY_PortItem::GY_PortItem(PortType type, QString name)
    :color((procI==type || procO==type) ? QColor(255,255,255) : QColor(QRandomGenerator::global()->bounded(128,255), QRandomGenerator::global()->bounded(128,255), QRandomGenerator::global()->bounded(128,255)))
    ,type(type), name(name)
{
    lineCount = 0;

//    setToolTip(QString("QColor(%1, %2, %3)\n%4")
//              .arg(color.red()).arg(color.green()).arg(color.blue())
//              .arg("Click and drag this color onto the robot!"));
    setCursor(Qt::OpenHandCursor);
    setAcceptedMouseButtons(Qt::LeftButton);
}

QRectF GY_PortItem::boundingRect() const
{
    return QRectF(0, 0, 10, 10);  //交互区大小
}

void GY_PortItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    Q_UNUSED(option);
    Q_UNUSED(widget);
    QBrush brush = painter->brush();
    painter->setPen(QPen( color, this->type==add ? 2 : 3));

    if(this->lineCount && !linkedBySelLine){
        painter->setBrush(QBrush(color));  //填充
    }
    else{
        painter->setBrush(QBrush(QColor(0,0,0,0)));  //插槽
    }
    if(type==procI || type==procO){
        QPainterPath path;
        path.moveTo(0, 0);
        path.lineTo(5, 0);
        path.lineTo(10, 5);
        path.lineTo(5, 10);
        path.lineTo(0, 10);
        path.lineTo(0, 0);

        painter->drawPolygon(path.toFillPolygon());
    }else{
        painter->drawEllipse(0, 0, 10, 10);
    }
    if(type==add){
        painter->setPen(QPen( color, 2));
        painter->drawLine(5,3,5,7);
        painter->drawLine(3,5,7,5);
    }

    painter->setBrush(brush);  //还原

}

QString GY_PortItem::getStrSignals() const
{
    return strSignals;
}

void GY_PortItem::setStrSignals(const QString &value)
{
    strSignals = value;
}

QString GY_PortItem::getDescription() const
{
    return description;
}

void GY_PortItem::setDescription(const QString &value)
{
    description = value;
}

QString GY_PortItem::getName() const
{
    return name;
}

void GY_PortItem::setLinkedBySelLine(bool value)
{
    linkedBySelLine = value;
}


/*
void PortItem::mousePressEvent(QGraphicsSceneMouseEvent * mouseEvent)
{
    if(type!=add){
        setCursor(Qt::ClosedHandCursor);

        ((DiagramScene*) scene())->setMode(DiagramScene::InsertLine);
        ((DiagramScene*) scene())->setLineType(type==procI||type==procO ? Arrow::proc : Arrow::data);
        ((DiagramScene*) scene())->setPortStart(this);
        //((DiagramScene*) scene())->mousePress(mouseEvent);  //mouseEvent不同导致崩溃

    }else{

        this->moveBy(0,20);  //先于addPort()
        ((DiagramItem*)parentItem())->addPort(addToType,this);




    }


}
//*/

/*
void PortItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
    if (QLineF(event->screenPos(), event->buttonDownScreenPos(Qt::LeftButton))
        .length() < QApplication::startDragDistance()) {
        return;
    }
//
    QDrag *drag = new QDrag(event->widget());
    QMimeData *mime = new QMimeData;
    drag->setMimeData(mime);
//! [5]

//! [6]
    static int n = 0;
    if (n++ > 2 && QRandomGenerator::global()->bounded(3) == 0) {
        QImage image(":/images/head.png");
        mime->setImageData(image);

        drag->setPixmap(QPixmap::fromImage(image).scaled(30, 40));
        drag->setHotSpot(QPoint(15, 30));
//! [6]
//! [7]
    } else {
        mime->setColorData(color);
        mime->setText(QString("#%1%2%3")
                      .arg(color.red(), 2, 16, QLatin1Char('0'))
                      .arg(color.green(), 2, 16, QLatin1Char('0'))
                      .arg(color.blue(), 2, 16, QLatin1Char('0')));

        QPixmap pixmap(34, 34);
        pixmap.fill(Qt::white);

        QPainter painter(&pixmap);
        painter.translate(15, 15);
        painter.setRenderHint(QPainter::Antialiasing);
        paint(&painter, nullptr, nullptr);
        painter.end();

        pixmap.setMask(pixmap.createHeuristicMask());

        drag->setPixmap(pixmap);
        drag->setHotSpot(QPoint(15, 20));
    }
//! [7]

//! [8]
    drag->exec();
//
    setCursor(Qt::OpenHandCursor);
}
//*/

/*
void PortItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *)
{
    setCursor(Qt::OpenHandCursor);

    //((DiagramScene*) scene())->setPortEnd(this);  //此处为同一PortItem的mousePress和mouseRelease事件

}
//*/
